Dough-mixing machine



F. NOTZ ET AL DOUGH MIXING MACHINE July 24, 1928.

Filed July 23, 1925 2 Sheets-Sheet 1 LIN;

un N.

F. NOTZ ET AL DOUGH IIIXING MACHINE med July 23. 1925 2 sheets-sheet 2 closed but rendered detachable so that the interior drive parts, to be hereinafter more fully described, are rendered readily acces.

sible. This Structure provides end bearings in the housings 14 and 15 and an interme# diate openings() to accommodate a mixing present instance this chamber comprises ay j hopper-like structure or drum having .end

plates or heads 22 suitably cored out to provide for lightness while maintaining ythe necessary rigidity and strength, and a-peripheral plate or lateral section 28 rimmed asy at 2li around'the ends and securedfto the peripheral edges of. the end plates as indicatet at 25.

The inner walls 26 of the housings 1% and are formed with bearings 27 and the ends of the mixing chamber or plates 22 constituting the'drum ends, are provided with outwardly extending hubs or sleeves 28 having reduced portions 29 entering the bearings ork bearing sleeves 27 and shoulders 55C-'formed thereby to abut the inner ends of thebearings and prevent the mixing chamber` from shifting endwise, that is to take up end thrust. v y

Mounted upon the removable housing sections 16 and 17 at the inside and bolted to bracket arms 8,1 formed thereon and extending inwardly therefrom, are trusses 'or up-y right supports 32 comprising vertical end members bolted to the bracket arms as indicatedat 33 and crossmembers connecting the saine in the forni of integral castings having horizontall inwardly extending lugs 34 at the upper ends of said vertical end members provided with threaded sockets or holes in which adjustable supporting screw-s 35 are threaded. Nuts 36 are threaded on the screws to engage the top surfaces of the.

truss webs to hold the screws in vertically adjusted positions.

A segmental top section 37 is arranged on and lsecured to the mixing chamber and has its walls tting over the top edge of said chamber and a cover 88 fitted thereover to close the top of the stationary section and chamber to protect the contents. The cover 38 may be provided with a, supplemental closure 89 having handles 40 for inanipulating the same. ln order to support the cover over the stationary top section 37, the cover is provided with reinforcements l1 having outwardlyy projecting apertured arms 4t2 through which the adjusting screws 35 are engaged with the heads 43 in contact'witi ,y

the top faces of the arms and. nutsy #te clamped againstthe bottom surfaces of the arms by adjustment on the screws whereby the cover 38 may be securely held against vmovement and adjustably supported over the mixing chamber together with the section 37. it will also be apparent that'the cover 538 may be raised or lowered to secure proper fitwith the section 37 through the medium of the-screws `35 and nuts 3G whereby free move- 'ment of the mixingr chamberrfrom receiving or operative mixing position to a tilted and discharging position or vice versa, maybe obtained without undue friction or leaving gaps between ythe interitted parts such as would permit the entrance' of foreign matter into the mixingv chamber toA coinniingle and spoil the batch of dough contained therein. In order to prevent the dough from leaking out and dropping down onfthe machine and floor, or being splashed or thrownout from the machine when the machine is vin operation or the receptacletilted, Scrapers 4.5 are providedfatstheifront andbaclr of thereceptaclewith scraping edges 46 projecting slightly above the top edges of the wall 23 beneath and in contact with thebottom of the cover 38 to scrape the dough therefrom when'tl'ie,receptacle orA mixing chamber is moved vinto a tiltingposition to discharge the contents or into an upright or receiving positionwhich it is adapted to maintain during the mixing operation. g n

1Within the mixing chamber 21 is mounted a revoluble mixing frame or arm 47 which is formed oftwo end bars 1S and two connetting or cross-arms t9 of any suitable Itype, double or "single as yshown and described inthe patents above alluded to, but

preferably of the type shown in the patents to Netz andRoyan No.1,537,259, granted May 12,- 1925. In practice, vtheend bars and 'arms will ber preferably formed as an inte gral casting rand are mounted upon a central shaft which passes through suitable stuffing boxes in the endwalls oi` the mixing` chainber and provided with novel means at one or both end-s whereby revolution maybe im-y parted to the shaft and rmixing frame or arms. In the preferred `form shown inthe drawings andv more particularlyin Fig. 1,

4the end bars are apertured to receive the inner ends of short shafts 50 and 51 rprojecting inwardly from the ends of the mixing f chamber and secured or keyedin the apertures of the end bars as indicated at 52. These shafts project outwardlyr from ythe end ba'i's of the mixing frame and are journaled-in the hubs 28 with suitably interposedl pacliings 53 having pacliingglands or bushings 5st, the inner flanges of which forni bearing platesin contact vwith annular bearingplates or washers 55 set iny recesses in the end bars i8 of the mixingvfraine i? around the apertures 50 thereof. j y f n Theshaft 50 hasy ya reduced portion 5G forming a shoulder 57 adjacent to which the reducedv Aportion yof the shaft is revolubly mounted in a bearing 58; The extreme outer end of the shaft 50" is revolubly mounted in a bearing 59 contained withinfa thiiiged'cap :plate `60 fitted Within a 'sleeved opening A61 in the lout-er Wall of the` housing 1lat the juncture of the lower stationary and upper detachable or removable sections therefor or kthe joint tl'ierebetween, as clear-` ly seen in both Figs. yl and 2 of' the drawings. The removable bearing or cap plate is detachably securedk in position `as by stud bolts orcazp screws @engaging threaded sockets in the sleeve 61, thus permitting convenient access to the: bearings for cleaning, repairing7 replacement or lubrication.y

A Worin gear G3, preferably ofthe detachable riniitjipe, has its hub 6ft ,fixed or keyed to thereduced `portion 56 of theshaft 50, as indicated at 65,'Within the housing la and is disposed in mesh with a Worm G6 on a Worm shaft 67 journaledy in tliesides of the housing 1*-1 in the bearings 68 and 69 beneath the cylindrical portionaof the housing lea-as clearlyseenv in Fig; Q- o-f the drawings.`

having a detachable packing; gland 737 pre- The bearing 68 fis preferablj7 of the single'or venting the escape of the lubricant freni within the housing); of the Worm gear. The` side Wall ofthe housing has afslight lateral projection to receive the extended end lMge-'f the shaft 07 which has a sprocl-:et Wheel 75 fixed thereto. i

A silent runningv drive chainor belt 7 6 is trained around .the sprocket Wheel 7 5 `and av sprocket wheel 77 secured tov the shaft 78 of a motor 79, preferably ofthe electric type, mounted in a chamber 80 beneath the housing 111. For this purpose'the bottom of the housing' 1/1 is'closed by the ivallSl While the bach of the chaniberSO is opemas indicated at 82, to permity access to the `motor and the projection of the sidewall 5 of the casingi or frame ofthe machine provides a housing 83 which is shapedito accommodate the belt 76, as clearly indicated `in the drawings. y v j i j `lit; is `preferable to mount thelinotor upon the base 4, which latter is provided with `9uideivays 811 receivingv T -bolts S5 which eX.- tend through and connect with the base 86 of the motor frame in order to secure the motor in position and permit adjustment thereof as requiredto tighten thebelt 7 6 and permit kconvenient mountingof the motor iniposition and assemblage and disassemblafge vof the parts. The bolts 85 are ypreferably` provider-latthe corners of the motor base and when lthev nuts thereof are loosenedg'the `motor :may be `slidin its slidable n'iounting through the medium ofadjusting sere-Ws 87 j engaging through threaded apertures of lugs 88th the Abase 4. This permits convenient adjustment of the motor as desired.

The housing 14 basan oil gauge. 89.

Suitable means, as indicated at 89',L is provided for supplyinglubricant to the: worm vgear Within the housingr 14., Thelbearings `for, the shafts 50 and 51 and the packings dough, .the mixing chamber is `provided eX- ternally on its Wall 23 at the underside, with curved rack bars 910 'with which meshpinions 91 fixed upon a` longitudinal shaft 92 disposed' at one side oftheinixingchamber and journaled in bearings 93 extendiifip,r inivardly from the inner Walls 26 of the housings 111- and 15, asclearly showirin Figul of the drawings. t

`4@ne end of the shaft 92 projects intofth-e housing 15 as indicated at 941,1 and this ei:- tended end carriesfaworm gear 95 Within the housing. Thel Worin gear 95 isdisposedin mesh with a Worm Yshaft 90 journaled at rightangles tothe shaft 92 in the housing 15. Thefworin shaft '96 has a beveled kpinion'or initer gear 97 fixed thereto in mesh With a similar pinion 98 fixed to the'inner 'end'of :i short shaft '99 jouri'ialed `in the'outer Wall of the housing 15and a supplenieiitary housing 100 provided on and projecting from the outer Wall of the housing 15. The outer end of the shaft 99 within the housing l00has a sprocket. Wheel 101 fixed thereto; around which drivebeltor chain -102 is trained. This ydrive belt is also .trained 'around a sprocket y103 `fixed to the outer `end of the motor shaft 104 of the motor 105 Within the lower port-ion ofthe housing` 100. The motor 105 issuppoitedadjustably in the loiverfportion of the housing; 15 ofthe end sectiony 10 and is provided ivith'ineans indicated at 10G for connection Withza source of current.

By adjustment ofthe motor 105 on its base, the 'driving chaino'r belt'1021maylbe tightened. A suitable switchism-ranged or controlling each motorso that the li'iiifzinigf frame or arinniay be driven as desired, while the mixingreceptacle or drum maybe moved into an L lpl'ight position"*forreceivngthe batch and mixing the dough and subsequently tilted to one side in proximity to thetop edges of the intermediate depressed portions of the sect-ions 9 and 10 of the frame for the purpose of'discharging the batch, after which the mixing receptacle is raised to Areceivingposition. In the eventthat it is desired to manually tilt or move the 'mixing receptacle, the. front` portion lof the auxiliary housing 100 is provid-ed with an opening 107 over the sprocket wheel 101 and the. latter carries a foldable handle 108 vwhich may be extended for thepurpose of manually turning the shaft'92 through the train yof gearing to swing the mixing receptacle on itsy axis by rotation of the pinions 91 in mesh with the rack bars 90. `When the motor 105 is `remployed for driving the shaft 92, the handle 108 is folded against the sprocket wheel 101 the shaft 51 and -is detachably secured in position as indicated at 111 whereby access may be had to the bearing for obvious reasons. A pressure lubricating device 112 containing grease is also mounted in the outer wall of the housing 15 and extends to the bearing 109 for the purpose of lubricating tlielatter.

From the foregoing, it will be seen that when the mixing receptacle has receivedjthe,r` batch, the motor 79 is operated to drive the worm shaft 67 through the medium of the endless drive member or belt 7G, thus imparting rotation to the worm gear 63 and consequently revolving the shaft 51 and mixing frame fixed vthereto within the mixing receptacle. l

A'positive smooth and uniform drivey of high speed may be imparted to the mixing arm and the dough will be caused to be shifted back and forth as a mass from one end of the mixing chamber to the other, in addition to being stretched and pulled as the mass is shifted and lturned to effectively mix; the

ingredients and prevent adherence ofthe dough to the lateral and end walls of the mixing chamber. When the mixing operation is completed the receptacle is tilted by the means already described to discharge the contents after which the receptacle is raised to receive a new batch. The mixing, kneading, stretching and aerating processes are secured rapidly and owing to the structure of the device, the loperation is carried onnoiselessly. In addition, the machines may be i f y 1,675,193

made of considerably larger capacity than heretofore and vyet secure smooth operation with` the consumption of a minimum of` power.v n n c y. y.lVhile `we have shown and ydescribed our invention in a preferred form, we are Aaware that vvarious changes andinodiiications may be made without' departingfrom the princi'- ples of our invention, the scope of which is to bel determined by the appended claims.

Ne'claim as our invention r1. In a y,doughmixing machine., var frame formed with a divided base, therespective sections of whichv are separable, and each of said sections adaptedt-o receive a relatively separate yand independent power plant, a housing formed on each section of the base, and `said housings extending upwardly in spaced relationship to each' otherto form a passage therebetween'adapted to` receive a mixing-.frame and mixingv chamber of ay dough mixing machine, the latter' being ]ouriialled inthe housings, and the respective housings each receiving the drive connections from one kofthe power plants in the base to the mixingframe and chamber.

`2. In a plastic mixingmachine,afra-me formed with a' divided, hollow base, the respective sections of which are separable, and

each of saidsectionsr adapted to receive a'y relatively separate and vindependent power plant, a hollowhousing formed on each sectionof'the base and communicating therewith y'to receive drive connections frointhe 'respective powerplants, said housings ar-y ranged in spaced relationship to each other to form a passage therebetween adaptedto receive a mixing frame and mixing chamber of af plastic mixing machine, the latter' being journalled in the housings;

3. Ina doughmixing'machine, a frame formed with a transverselydivided base, the

respective sections of which are hollow and separable, and .each of which 1s adapted to yreceive therein a relatively Jseparate and independent powerplant,-xan upright, hollow' housingforined on cach section'of the base and communicating with the interior thereof to receive drive connections from r'the re'- spective power plants', and said housings extending upwardly in `substantially parallel spaced relatici ip to each other to form a passage thereooefycen adaptedto receive a mixing frame yand mixing chamber of a 'dough mixing machine, ythe latter being journalled in the housings, and both the mixing rframe and 'the chamber being separately driven" from the drive connections'of the separate power plants.

' In a'mixing machine, a frame formed with a divided base, the respective sections of ywhich are separable and adapted to be moved toward veach other in assembly tor house the power mechanism of a mixing machine, a housing formedy on leach section of lll) the base and provided with afjournal bearing, and said housingsbeing arranged in adapted to be mounted insaid bearings and in said pasasge when the sections ofthe base are movedtoward each other, said housings adaptedto receive Vthe'idrive connections power' mechanismy to` the mixing.

from the device. E v

5. In a mixing machine, a. iframe iormedf with a `dividedhollow base, thefrespectivefj sections of which are separable and adapted to be moved toward each otherin assembly to house the power mechanism of a mixing machine, an upright hollow housing formed on each section ofthe base and provided with a journal bearing, and said housings being' arranged in assemblyl to be in spaced parallel relationship to each other to form a passage therebetween and to align the journal bearings, and a mixing device having journal members adapted to be mounted in said bearings and in said passage when the sections of the base are moved toward each other, said housings adapted to receive the drive connections from the power mechanism to the mixing device.

6. In a mixing machine, a frame formed with a transversely divided, hollow base, the respective sections Vor" which are separable and adapted to be' moved toward each other in assembly, and each section oi which is adapted to receive a relatively separate and independent power plant, an upright, hollow housing formed on each section of the base and provided with a! journal bearing,

' and said housings being arranged in assembly to be in spaced parallel relationship to each other to lorm a passage therebetween and to align the journal bearings, and a mixing device having journal members adapted to be mounted in said bearings and in said pai-asge when the sections are moved toward each other, said housings communieating with the interior of the basesections to receive therethrough the drive connections from the power plants to themixing device.

7. In a mixing machine, a trame form-ed with a transversely divided, hollow base, the respective sections of which are separable and adapted to be moved toward each other in assembly to house the power mechanism of a mixing machine, an upright hollow housing formed on each section of the base and provided with a journal bearing, and said housings being arranged in assembly to be in spaced parallel` relationshipv to each other to form a passage therebetween' and to align the journal bearings, kand a .mixing device having journal members adapted to be mounted in said bearings and in said passage when the sections are moved toward each other, said housings communicating with f the interior of the ybase sections to receive` therethrough relatively inr dependent drive connections/trom the power mechanism tothe mixing device.,y s

8. `In a'mixing machine, a frame formed with Va dividedy base,thefrespectir.ie sections of-which'are separable `and adapted to be moved toward each other in assembly to ,housethe'` power mechanism of amixing machine, a housing formed on each section `of the base and provided with OIDM bearing, removable-top sections formed in each housing above the journal bearing therein,` and'said housings being arranged in assemblyto form a passage therebetween and to. align the yjournal bearings, and. a mix# ing device having journal members adapted to be mounted in said bearings and in said passage when the sections of the basearemoved together, said housings adapted to receive the drive connections from the power mechanism to the mixing device.

9. In a mixing machine, a rame'formed with a .divided base, the respective sections of which are separable rand adapted to be moved toward leach other'in assembly to house the power mechanism of a mixing machine, a housing integrally formed on `each section or thel base andprovided with a journalr bearing, removable top sections formed in each housing, said sections being joined to the base sections of the housings at the bearings, said housings being arranged in assembly to form 'a passage therebetween above the basesections and to align the journal bearings, and a mixing device` having journal members adapted to be mounted in said bearings and in said passage when the sections oit the base are moved together, said housings adapted to receive the drive connections from the power mechf anism to the mixing device. ,j

10. In a mixing machine, a frame formed with a divided base, the respective sections j of which are separable and adapted to be moved toward each other in assembly to house the power mechanism of a mixing machine, a housing formed on each section of the base and provided with .a journal bearing, upright supports formed on each of said housingaand said housings. being arranged in assembly to form a passage therebetween and to align the journal bearings andthe upright supports, `anda mixing c device having journal members and a cover,

llO

communicating with th\rv base and 'rising from the end portions of the basev to ,forni plastic mixing -inachine, the ylatter being p journaled in the housings, independent drivn ing means in the end `portions of the basefbe lon7 the respective housings, the drive con-v nections to which are carried inthe'respeotive housings, and one oisaid housings hav-k ing a,y bottom partitioning vWall above 4the base forming an oil chamber for lubricating the drive connections therein.

12.' In a plastic mixing inachinea framey formed with a base,'relatively spaced vkapart housings formed on the base and rising from the end portionsy thereof to ltorina passage between the housings to receivey aQIniXing frame and mixingchamber of va plastic mixing machine, the latter being journaled in kthe housings, independent driving means` on the-base having drive connections tothe mixing frame `and mixing chainbeigthe drive connectionsy from one `of `the driving means, to the mixing frame and being partiallycar-v ried inA one of therespective housings and said housing having a bottoni partitioning Wall above the base forming an `oil chamber kfor lubricating the drive connections theref FELIX Norz.

, GEORGE ROYAN. 

